Floor-scraper.



W. SCHWEITZER.

FLOOR SCRAPER.

APPLICATION FILED ocT.29. I913.

Patented Aug. 10; 1915.

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Lid-9,86%. Specification o Application filed @L'tOl'iBl 29, 33.22.

To all whom it may concern Be it known that LlVILIIELM oonwnrrznn, a.sub ect of the King of Prussia, German Emperor, residing at Breslau,kingdom ol: Prussia German Em ire have invented cer- I tain new anduseful Improvements in nice 1 T l Scrapers, of Whlch the following is aspeci fication.

This invention relates to a door scra or h means t whlch floors can herubbed, Waxed and polished Without any fatigue for the personWhohandl'es the appa ratus.

In the accompanying drawings: Figure 1 is a front elevation partly insection of the apparatus. Fig. 2 is a plan View of the same. Fig. 3 is across section on. line A-A of Fig. 1. F igs. 4: to 6 represent the toolsfor Working the floor. Fig. 6 shows, on a larger scale, the part of thetool represented in Fig. 5.

The apparatus essentially consists of a casing 3 of U-shaped crosssection mounted upon wheels 1-2. This casing 3 has rails at its lowerend on the inner surface. The tool holder 5, guided on said rails iconsists of a rectangular frame, which has lateral arms adapted to slideupon the rails t of the casing. Plates 7 fixed on the inner surfaces ofthe longitudinal sides of the tool holder 5, have vertical slots 8extendins downward from their ,upper edges (Fig, 17, The tool. holder 5is driven from the Wheels 1 the. re volving motion of said Wheels beingtransformed into a reciprocating motion of the tool holder through theintermediary of the driving rods 9.

A. pushing rod 12 the lower end of which is hingedly mounted'in asupport of the. casing 3 has a handle ll at its free end... supportingrod 13 is hingedly mounted upon the rear end of the casing 3, has aforkshaped end adapted to engage with laterally projecting studs l3'ofthe pushing rod 12. When the apparatus is to be moved to and fro on thevfloor for workin the same the supporting rod 13 is lowered so that thepushing rod is free.

For rubbing the floor the tools shown in Figs. 1 and 3 are'used'which.consist of steel. shavings. compressed or tied up in any convenientmanner so that they form prismatic blocks 15. In each block 15 an ironrod 16 is embedded the ends of which laterally projecting from the block15 are adapted to engage with the vertical slots 8 (Fig. l) oi the toolholder. The blocks 15 are of such e that if the lower surface of theblock s upon the floor the ends of the iron rods a certain distanceshove the ower ends of the vertical slots 8 so that the liininntion ofthe mass or the hloclr is autolly coinpensat d as said i. at rod 15 islots The reoulred pressure-is obta ed by a heavy lid 19 resting uponsaid blocks 15 and having a. handle 17 and "rollers 18. blocks of steelshavings 15 the lid 19 is pulled in the direction of the arrow (Fig. l.s rollers running on the upper edges of the plates 7. After the floorhas been rubbed it is erased by means of brushes 20 and a distributingdevice 21, then polished by the brushes only.

lhe brushes 536 have lateral studs 22 and the was distributing device 21has similar studsiZS designed to be inserted in the ver tical slots 8 ofthe plates '2' of the tool holder. The was distributing device 21 ismounted at the middle of the tool holder, a brush 20 being placed at thefront end and another brush at the rear end or" said tool holder. TheWait distributing devicev 21 consists of a receptacle 25 (l i'g. 5)closed hv a lid 2% and connected by means of a ragtilating Valve 26 witha tubular distributor 2?. This tubular distrihuter is fixed and holes 28(Fig. 6) through. which the liquid flows out upon the floor. The liquidwas is continuously stirred by means of stirrers 29 fixed hly mounted inthe ends of the tubular distrihuter 2'2, said shaft heing turned bymeans of friction Wheels 31 mounted its ends and rolling upon the floor.After the floor has been Waxed the disti lting de 'ice is removed andpolishing, brush 20 inserted instead 7 l: claizne l. A floor scrapercomprising in combination a casing of ii -shaped cross section mountedon wheels, guide ils fixed at the lower end on. the surface ct? saidcasing, a rectangular too-l t me moi ably mounted on said rails, meanstor co. iicating a reciproeating motion from tr 1 ls or" the easing tosaid tool holder frame, plates having vertical slots downwardlyextending from the upper edge fixed on the inn r surfaces of the longsides of the tool ho er frame,

tools removahly mounted in said verioal. slots of the tool holder sothat hey are the floor lay gravity,

upon a. shaft revolu- In order to remove the substantially as describedand shown and for purpose set forth.

2. A floor scraper comprising in combination a casing of U-shaped crosssection mounted on Wheels, guide rails fixed at the lower end on theinner surface of said oasing, a rectangular tool frame movably mountedon said rails, means for communieating a reciprocating motion from theWheels of the casing to said tool holder frame, a handle for pushingsaid apparatus, plates having vertical slots downwardly extending fromthe upper edge fixed on the inner surfaces of the long sides of the tooimesses holder frame, and the scraper tool loosely mounted in said toolholder and consisting of blocks of compressed steel shavings, horizontalrods embedded in said blocks so that their projecting ends can engagewith. the vertical slots of said plates of the tool holder frame,substantially as described and. shown and for the purpose set forth.

In Witness whereof I have hereunto set my hand in the presence of twoWitnesses. ELK- ELM SCHVVEITZER. Witnesses Smsmzmo Lus'rle, ERNST KHZ.

